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FastenMaster- ThruLOK- Through Bolt/Screw - Size Options

Original price $3.52 - Original price $3.73
Original price
$3.52 - $3.73
Current price $3.52

The ThruLOK is a through-bolt replacement system combines the strength of a through-bolted connection with the speed of a LOK fastener with no predrilling required. 

  • Its three-part assembly includes a screw, featuring the patent-pending Paddle Point™, engineered washer, and LOK-Nut.


  • Deck posts, Hand rail posts, Multi-ply beams, Carrying beams and more.
  • ThruLOKs replace traditional carriage and through-bolts in applications


  • Installs with an 18 volt cordless drill
  • No drill bits or wrenches required
  • Galvanized coating meets IRC ACQ corrosion requirement
  • Lifetime performance guarantee
  • Code-Compliant Connections
  • ThruLOK is code-compliant when attaching decking handrail posts and carrying beams.

  • ThruLOK is tested and supported by engineering data that conforms to the most current ICC standards. It is also approved for use in ACQ or treated lumber.